PLEASE SOMEONE ANSWER THIS TIME IM TIRED OF THE LINKS TO UNKNOWN WEBSITES What is the independent variable on this graph and what is the dependent variable on this graph?

Ithink that the missing word is mixed

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion

It is nonrenuable which means that once you have used it, it's gone forever.